A spacecraft of mass $M$ moves with velocity $V$ in free space at first, then it explodes breaking into two pieces. If after explosion a piece of mass $m$ comes to rest, the other piece of spacecraft will have a velocity
A spacecraft of mass $M$ moves with velocity $V$ in free space at first, then it explodes breaking into two pieces. If after explosion a piece of mass $m$ comes to rest, the other piece of spacecraft will have a velocity
- A
$\frac{{MV}}{{M - m}}$
- B
$\frac{{MV}}{{M + m}}$
- C
$\frac{{mV}}{{M - m}}$
- D
$\frac{{mV}}{{M + m}}$
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